Answer / sagar

Q = VIsin(fi)

capacitor current = I = Q/Vsin(fi)

For , 230 v and power factor angle 90 ,then

I = 1/230*sin 90 = 4.32 amp.

If power factor angle is 36.89 (power factor 0.8)
,then

P/Q = kw/KVAR = VIcos(fi)/VIsin(fi)

P/Q = cos(fi)/sin(fi) = Tan(fi)

P = Q tan(fi)

P = 30 tan(36.89) = 30 * 0.75 = 22.5 Kw

Answer / kalanidhi

Current calculation for 200 kvar capacitor


CAPACITOR VOLTAGE CALCULATION

#System Voltage (MV) : 433V (WITH +- 5%)
#Voltage drop across (Maximum) : 433 x -5% = 21.65V
Capacitors working : 411.35 Volts.

CAPACITOR CURRENT CALCULATION
KVAR Calculation at 433 Volts.
KVAR 433 Volt (433)2
= ------------ 200KVAR
(411.35)2

187489
= ----------- 200 KVAR
169208

= 1.1 x 200 KVAR = 221.59

= 221.59 KVAR

Current for 221.56 KVAR at 433 V = 221.59
------------------------ x 1000
433 x 1.732 x 0.6

= 492 Amps.

Answer / mohammad rafique

dear,sir

my answer is 1 kvar = 1.3122 will be

my 2nd answer is 30 kvar= 44.5 kw will be and the mantioned
by powr factor like this,current cos(f1)and (requred cos(f2)

if my answer is correct then i shall be obligged to you

Answer / prasenjit chowdhury

Full load current 350 Amps, Line Voltage 430. 1 KVAR = How many Amps. What is the formula or calculation to sagest the capacitor seating on load.

Answer / srinu

Kvar: 1.732* v*i
1kvar=1000var
I=1000/1.732*415 for three phas
I=1.392amps

Answer / venkatesh o

normally Formula
Kvar= 1.732*V*I*Sin(pi)
If Pure Capacitor 90 Leads so The power factor is Unity(1)
Assume *V=415
*Sin(90)=1(But Reactive power is zero)
since I=Kvar/1.732*V*1 Eg. 1000/1.732*415*1=1.39A
other formula for Determine KW=KVAR/tan(pi)or KW=VIcos(PI)
Assume * cos(0.9)
since KW=KVAR/tan....Equ 1, take the cos invesr is equal to (0.9)=25.8419 ...Equ 2
KW=30KVAR/tan25.8419=61.94KW OR
they are more formulas
* KW=KVAR/tan(pi)
* Kw=KVA*cos(pi)
* Kw=SQroot(KVAZ^2-(KVAr)^2

Answer / botsar joseph antony

Ic=IsinQ1-I'sinQ2
where Q1 = phi1 and Q2 = phi
I is the curent, before correction and I' is the current,
after correction.
Ic is the subject of formula.

i want to estabilish an loss energy storage system,such that it can store electricity lost during the transmission of electricity in conductor,so that this system stores energy lost during transmission and supply it to street lights during night

2 Answers  

i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.

0 Answers  

what is relation between voltage and current and don't take resistance here. if we supose say when there is increase in voltage whwt happens to current?is it decrease or increase?

4 Answers  

what is meant by class 1 E in electrical power supply?

0 Answers  

I am shobana from Chennai. I am having my personal interview on 19th Dec at Chennai.kindly mail me the questions to mail id shobana.shanthi@gmail.com

0 Answers   Avalon, KK Capital,

Difference between a pilot wire and a normal conductor?

0 Answers   United Arab Aluminum Company,

what is smart&micro grid technology?under coal gassification?

0 Answers  

in which direction real power and reactive power flow and why???????

3 Answers  

What is the difference between air & vaccum circuit breakers?

2 Answers   IOCL,

in a three pin socket y the pin of earthng is longer n bigger...?

3 Answers  

what is diode? and what it is used for ?

3 Answers  

A 3 phase motor, 440 voltage, induction motor. If we take out rotor from motor and if we give supply 440 volt to stator then what happens?????

20 Answers